It sounds rather grandiose, but the humanoid robot has made a real difference in the life of Evans, who suffered a brain stem stroke at age 40 that left him paralyzed and mute. Therapy has enabled him to move his head and a finger.

That allows him to use a computer and control PR2. The bot helped him scratch an itch for the first time in 10 years.

As the vid below shows, Evans prefers to shave himself with PR2 rather than have others do it.

The robot has a Kinect motion-tracking system that can monitor his head movements, and Evans can use it for navigation and to manipulate objects.